Numerical simulation of vortex enhancement of heat transfer under conditions of turbulence flow past a spherical dimple in the wall of a narrow channel

The analysis of works on the numerical modeling of the vortex flow and heat exchange in the vicinity of the dimple on the flat wall is presented. The multiunit algorithm of the Reynolds and energy equations solution on the basis of the structurized nets is applied for calculating the turbulent mode in the narrow channel with the spherical dimple on one of the walls. The mechanism of the heat exchange waterspout intensification in the spherical dimple of the various depth is analyzed. Special attention is paid to the vortex structure rearrangement and jump-like increase in the heat transfer from the wall with the dimples